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open attached HTML file - it has about 500KB The opening it self takes by guess 10s and every keystroke is a pain
Created attachment 96200 [details] tested file
Reproducible - the editing is very slow. I tried to make several snapshot and in all of them most of the CPU time (over 2/3) is spent in classes from o.n.m.editor.lib.drawing and o.n.editor.view.spi - it seems to be a regression in editor painting.
Looks similar to #182961 or #182900
*** This bug has been marked as a duplicate of bug 182961 ***